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2001 Volkswagen Jetta

Question: The EPC light came on 2 weeks after replacing the battery, what could be wrong?

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sneeky, 2.0L 4 Cylinder, Chula Vista, CA, August 24, 2011, 23:07
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 Rookie

I replaced the battery, before the light came on(it goes off then comes back), and the car wont turn on unless I give it some a jump start, sometimes, I hear its the alternator, but it worked fine for two days then this happened. Prior to this the car was not used for almost 7 months.

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  • Answer #1

    dandd August 25, 2011, 10:42
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     Master

    A jump start is not a good idea for this car, it has so many computers that you can erase some of the adaptions. An EPC light is caused by a fault condition in the electronic throttle body, but again, voltage surges from jump starting or really low battery can cause all kinds of problems. I would first deal with why the car needs a jump start. You either have a defective battery, ( yes some are faulty right off the shelf ), poor charging from your alternator or a power drain that kills your battery when the car is parked over night.

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